If you earn a living by being a salesperson, no matter what you are trying to sell, you will be successful as long as you are willing to listen to your potential customer. Although listening takes a few minutes of your time, by doing so, you will ensure that you can provide the right solution rather than throwing suggestions out there and hoping someone will take what you are offering.
A good example of this is my experience with various dentists. As everyone knows, it can be extremely costly to get dental work done. A recent visit to a brand new dentist left me feeling overwhelmed. Rather than asking me what I wanted to do, he simply gave an excellent sales pitch on how I needed a certain treatment and that I would need to cough up thousands of dollars in order to get it done.